Vapor-lamp.



W. LIEDKE. VAPOR LAMP. APPLIOATION FILED 0012.13, 1911.

Patented Aug. 12,1913.

INVENTOE Willibald Liedke BY ATTO NEYS UNITED STATES PATENT OFFICE.

WILLIBALD LIEDKE, OE IBERLIN-GHARLOTTENBURG, GERMANY.

T0 aZZ whom it may concern:

Be it known that I, WILLIBALD LIEDKE, engineer, a subject of the Emperorof Germany, residing at Berlin-Charlottenburg, in the Empire of Germany,have invented a certain new and useful Vapor-Lamp, of which thefollowing is a specification.

This invention relates to vapor lamps, including certain new and usefulimprovements in a. main burner and the means by which it is suppliedwith vapor, and a pilot flame, the latter operating to start the mainburner and being itself cut off when the main burner is lighted.

According to this invention the pilot flame gas supply is automaticallyshut off by the action of a thermostatic valve.

In the accompanying drawing, Figure 1 is a central vertical sectionthrough the lamp constructed in accordance with my invention, Fig. 2 isa detail section, on an enlarged scale, taken through the thermostaticvalve.

a is the main gas supply pipe of the lamp.

Z) is a branch pipe leading from the pipe a to a thermostatic valve 0.This valve 0 is connected by a pipe (Z to a Bunsen burner e.

f is a continuation of the gas supply pipe a, opening into the casing ofan injector 9 that delivers into a chamber h. This chamber h is intendedto receive the mixture of gas and air for operating the lamp, whichmixture is led thence by a pipe 2' to the lamp burner is.

Z is an annular vessel surrounding the pipe 2'. It is adapted to containa substance capable of being gasified or vaporized by heat, for instancemercury. A pipe m leads from the top of the vessel Z to the injector g,and a pipe n connects the bottom of the chamber h to the lower part ofthe vessel Z.

The operation of the apparatus is as follows: Then the gas cock 0 in thegas pipe at is opened, gas passes through the pipe Z), valve 0 and piped to the Bunsen burner e and after the mixture of gas and air isignited, the flame from the burner 0 will heat the mercury in the vesselZ. The mercury is thereby converted into vapor which passes through thepipe m to the injector g whence it issues, as a jet which draws in airthrough Specification of Letters Patent.

Application filed October 13, 1911.

Patented Aug. 12,1913.

Serial No. 654,447.

the apertures ;0 and also draws in gas from the pipe 7. This mixture ofgas and air is compressed in the chamber h whence it passes through themixing pipe 2' to the incandescent lamp burner is. The mercury vaporissuing from the injector 9 becomes condensed to liquid in the chamber hwhich flows out through the pipe a and back into the annular vessel Z.The heat generated by the burning of the incandescent burner flame actsupon the thermostatic valve 0 so as to cause the latter to close andthus shut off the supply of gas through the pipe b so long as the lampburner flame is alight. The closing of the pipe Z) extinguishes thepilot flame. When the lamp burner flame is extinguished, thethermostatic valve moves back into its original position, thus openingagain the gas supply to the pilot flame.

Having now described my invention what I claim as new and desire tosecure by Letters Patent is.:

l. The combination with a burner, of a mercury holder disposed adjacentto the burner, a fuel chamber with which the burner communicates, aninjector extending into the said chamber and communicating with themercury holder, a gas supply pipe leading to said injector, and meansfor preheating the mercury holder, whereby to generate gas from themercury adapted to actuate the injector for the purpose of injecting amixed fuel into the fuel chamber.

2. The combination with a burner, of a mercury holder disposed adjacentto the burner, a fuel chamber with which the burner communicates, aninjector extending into the said chamber and communicating with themercury holder, a gas supply pipe leading to said injector, means forpreheating the mercury holder, whereby to gener ate gas from the mercuryadapted to actuate the injector for the purpose of injecting a mixedfuel into the fuel chamber, and means for automatically cutting off thepreheating means when the main burner has beeen lighted.

3. The combination of a main burner, a holder disposed adjacent theretoand adapted to contain a volatile substance, a main gas pipe, a fuelchamber having connection with the main burner means actuated by the Intestimony whereof I have aflixerl my Silld volatlle substance 1n agaseous state for slgnature 1n presence of two wltnesses. compressinga1r and gas 111 the fuel chamber, a pre -heating burner adjacent theVVILLIBALD LIEDKE' holder and main burner, and a thermostatic Witnesses:

valve for shutting oil the preheating burner HENRY HAsPER,

when the main burner is lighted. XVOLDEMAR HAUPT.

lopies of this patent may be obtained for five cents each, by addressingthe "Commissioner of Patents, Washington, D. C.

